fuse_impls_chown.c
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上传日期:2018-01-08
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- /**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- #include "fuse_dfs.h"
- #include "fuse_users.h"
- #include "fuse_impls.h"
- #include "fuse_connect.h"
- int dfs_chown(const char *path, uid_t uid, gid_t gid)
- {
- TRACE1("chown", path)
- int ret = 0;
- #if PERMS
- char *user = NULL;
- char *group = NULL;
- // retrieve dfs specific data
- dfs_context *dfs = (dfs_context*)fuse_get_context()->private_data;
- // check params and the context var
- assert(path);
- assert(dfs);
- assert('/' == *path);
- user = getUsername(uid);
- if (NULL == user) {
- syslog(LOG_ERR,"Could not lookup the user id string %dn",(int)uid);
- fprintf(stderr, "could not lookup userid %dn", (int)uid);
- ret = -EIO;
- }
- if (0 == ret) {
- group = getGroup(gid);
- if (group == NULL) {
- syslog(LOG_ERR,"Could not lookup the group id string %dn",(int)gid);
- fprintf(stderr, "could not lookup group %dn", (int)gid);
- ret = -EIO;
- }
- }
- hdfsFS userFS = NULL;
- if (0 == ret) {
- // if not connected, try to connect and fail out if we can't.
- if ((userFS = doConnectAsUser(dfs->nn_hostname,dfs->nn_port))== NULL) {
- syslog(LOG_ERR, "ERROR: could not connect to dfs %s:%dn", __FILE__, __LINE__);
- ret = -EIO;
- }
- }
- if (0 == ret) {
- // fprintf(stderr, "DEBUG: chown %s %d->%s %d->%sn", path, (int)uid, user, (int)gid, group);
- if (hdfsChown(userFS, path, user, group)) {
- syslog(LOG_ERR,"ERROR: hdfs trying to chown %s to %d/%d",path, (int)uid, gid);
- ret = -EIO;
- }
- }
- if (user)
- free(user);
- if (group)
- free(group);
- #endif
- return ret;
- }